🪐 View in 3D Galaxy 📏 View on 3D Scale Stage

🧬 Biological Classification (Kingdom to Species)Ascaphus truei

Kingdom

Animalia

Phylum

Chordata

Class

Amphibia

Order

Anura

Family

Ascaphidae

Genus

Ascaphus

Species

Ascaphus truei

Amphibia🥩 Carnivore

Coastal Tailed Frog

Ascaphus truei (Coastal Tailed Frog · Coastal Tailed Frog)

🛡️ Conservation Status (IUCN Red List)LC (Least Concern)

DDData Deficient

LCLeast Concern

NTNear Threatened

VUVulnerable

ENEndangered

CRCritically End.

EWExtinct in Wild

EXExtinct

Geological Era

Extant

Diet

Carnivore

Length · Height

2.2~5.1cm · No data

Mass · Top Speed

No data · No data

Habitat & Fossil Locality

Clear, cold mountain streams bordered by old-growth forests

💡 Everyday Comparisons for Size, Mass & Speed

💡 A body length of 5.1 cm is similar to two Korean 500-won coins placed side by side (about 5.3 cm) (Comparison).
💡 Because it is highly sensitive to habitat changes, it can serve as an indicator species for assessing stream health (ADW, 'Economic Importance for Humans: Positive').

Reference standards: coach bus ~12 m, mid-size car ~4.9 m, compact car ~1 t, basketball hoop 3.05 m, credit card 8.56 cm.

#해안꼬리개구리#Ascaphus truei

📖 1. Overview

The Coastal Tailed Frog is a distinctive frog living in clear, cold mountain streams, where males mate using a tail-like copulatory organ. It is listed as Least Concern (LC, assessed in 2022) on the IUCN Red List.

🦴 2. Anatomy & Morphology

Body length ranges from 2.2 to 5.1 cm, with rough skin and coloration varying from brown to chocolate brown or olive green to match the streambed. Adapted to fast-flowing currents, its lungs are greatly reduced and appear to serve mainly for buoyancy control, while its hard, keratinized toe tips help it crawl among rocks on the stream bottom.

🔍 3. Ecology & Behavior

At night, it forages for insects, other arthropods, mollusks, and plankton, and breeds underwater in autumn from September to October. Because the tadpole stage is long, its streams must have permanent water flow; it does not hibernate in winter, though its activity decreases.